Gravity automatic boiler feed apparatus.



J. G. SANDERS. GRAVITY AUTOMATIC BOILER FEED APPARATUS. APPLICATIONFILED Nov. 12, 191s.

Patented Feb. 23, 1915.

4 SHEETS-SHEET 1.

THE NORR/s PETERS Co., PHOTO-LITHO.. WASHINGPON, D. I

J. G. SANDERS. GRAVITY AUTOMATIC BOILBR FEED APPARATUS. APPLIOATIONFILED Nov. 12, 1913.

Patented Feb. 23, 1915.

k4 SHEETS-SHEET 2.

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.'r. G. SANDERS. GRAVITY AUTOMATG, BOILER FEED APPARATUS'.

APPLIOATION FILED Nov. 12, 191s.

Patented Feb. 23, 1915.

4 SHEETS-SHEET 3.

THE NORRS PETERb Lu.. HHOTO-LITHO.. WASHINGIDN. DA x I J. G. SANDERS.GRAVITY AUTOMATIC BOILBR FBEDAPPARATUS.

APPLICATION FILED NOV. 12, 1913. t 1; Patented Feb. 23, 1915.

4 SHEETSSHEET 4.

-HE MORRIS PETERS CO., PHOTO-LITHO.. WASH/mnu..

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JOHN G. SANDER-S, OF MONROE, LOUISIANA.

GRAVITY AUTOMATIC BOILER FEED APPARATUS.

Meagan.

Application led November 12, 1913.

T0 all whom t may concern Be it known that I, JOHN Gr. SANDERS, acitizen of the United States, residing at Monroe, in the parish ofOuachita and State of Louisiana, have invented a new and useful GravityAutomatic Boiler Feed Apparatus; and 'l do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

This invention relates to the art of boiler feeders, and particularly toa new and useful improved gravity automatic boiler feed apparatus. v

One of the objects of the invention is the provision of an apparatus ofthis character having a system of conduits including valves therein, andmeans automatically actuated by gravity means, for opening certain ofsaid valves and closing others of said valves and vice versa, forcontrolling the water feed from any suitable source of supply to aboiler.

In practical fields the details of construction may be subjected toalterations, falling within the scope of what is claimed.,

The invention comprises further features and combination of parts, ashereinafter set forth, shown in the drawings and claimed.

1n the drawings z-Figure 1 is a plan view of the improved automaticfeeder. Fig. 2 is a side elevation of the same. Fig. 3 is an endelevation. Fig. 4 is a sectional view on line 4-4 of Fig. 1. Fig. 5 is asectional view on line 5-5 of Fig. 1. Fig. 6 is a sectional view on line6 6 of Fig. 1. Fig. 7 is a horizontal sectional view of a portion ofFig. 1.

Referring moreparticularly to the drawings, 1 designates a portion of asupply tank having its upper portion open, and extending from the sameadjacent the bottoni is a pipe 2, which connects to the union 3.Extending from the union 8 are pipes 4, which connect the elbows 5, fromwhich the pipes 6 and 7 extend. These pipes 6 and 7 connect to the valvecasings 8 and 9, which are provided with valves :10 and 11 coperatingwith the seats 12. The valves 10 and 11 are provided with valve stems12a and 13, the upper portions of which are supplied with openings 14and 15, the purpose of which will appear later.

Short pipes 16 and 17 connect to the valve Specification of LettersPatent.

Patented Feb. 23, 1915.

Serial No. 800,612.

casings 8 and 9. The short pipes 16 and 17 connect to the four-wayunions 18 and 19. Connected to the ends 20 and 21 of ythe unions 18 and19 are short pipes 22 and 23, which in turn connect to the valve casings24 and 25 having valve seats 26a, with which the valves 26 and 27 (whichare provided with valve stems 28 and 29) cooperate. The upper portionsof the valve stems 28 and 29 are provided with openings 30 and 31, thepurpose of which will presently appear. Pipes 32 and 38 (which connectto the elbows 34) are connected to the valve casings 24 and 25.Extending from the elbows 34 toward one another and connected to theTnunion 35 are pipes 36 and 37. A pipe 38 connects the T-union 35 withthe boiler 39, only a portion of which is illustrated. The four-wayunions 18 and 19 are in turn connected to additional four-way unions 40and 41, by the short pipes 42 and 43. One end 44 of the four-way union40 is connected to the tank or chamber 45 by means of the pipe 46, whilethe end 47 of the four-way union 41 is connected to the tank or chamber48 by virtue of the pipe 49.

Mounted in suitable packed bearings 50 of the unions 18 and 19 is atubular oscillatory trunnion or pipe 51 having a divisional wall 52substantially centrally disposed. Branching from the trunnion 51 uponeach sidey of the divisional wall or partition 52 is a branch tube 53.Connecting these branch tubes, as shown at 54 are bulb-like bowls 55 and56. These bowls or receptacles are substantially pear-shaped, and areprovided with chambers 57 and 58.

Arranged on the inside of the unions 40 and 41 are smaller unions 59 and60, to which the pipes or tubes 61 and 62 connect. The pipe 61terminates on the inside of the chamber 45 adjacent the top, while thepipe 62 likewise extends upon the inside of the tank or chamber 48,terminating adjacent the top thereof. Also connecting the unions 59 and60 are the pipes or tubes 63, 64 and 65, and 66, 67 and 68. Telescopinginto the pipes 63 and 66 are the pipes or tubes 69 and 70, the ends 71of which extend into the chambers 57 and 58 of the bulbs, and terminateadjacent the outer closed ends of the bulbs. The pipes or tubes 64 and67 open to the atmosphere up over the top of the open supply tank, whilethe pipes 65 and 68 extend into the boiler and terminate adjacent to ora little above the water line. In this manner the space above the waterin the chambers 57 and 58, and the spaces above the water line in thechambers or tanks 45 and 48 are open to the atmosphere when chambers arefilling from tank 1, owing to the pipes 64 and 67 opening to theatmosphere, and by reason of such arrangement and such structure thewater will readily flow into such chambers from the supply tank, whichis disposed at aheight considerably above the same.

The spaces above the water in chambers 57 and 58 and the spaces abovethe water in chambers or tanks 45 and 48 are open to the space above thewater line in boiler, equalizing the pressure in the tanks with theboiler pressure permitting the water to flow readily into the boiler.

The pipes 64, 65, 67 and 68 are suitably packed as shown at 72, wheret'hey enter the unions 40 and 41. The pipes 64, 65, 67 and 68 areQrovided with valve casings 73, 74, 75 and 6 having valves 77, 78, 79and 80, which are provided with stems 81, 82, 83 and 84 having openings85, 86, 87 and 88.

Mounted in guides 89 and 90 of the valve casings 8 and 24 and 9 and 25are slide bars 91 and 92. Also mounted in guides 93 and 94 of thecasings 73, 74, 75 and 76 are slide bars 95 and 96 having cam surfaces97, 98, 99 and 100, which merge into raised portions 101, 102 and 103.These slide bars 95 and 96 are mounted in the openings 85, 86, 87 and 88of the valve stems 81, 82, 83 and 84, and when these bars 95 and 96 arereciprocated simultaneously, certain of the valves 77, 78, 79 and 80 areopened and others are closed, and vice versa.

The bars 91 and 92 are provided with cam portions 104, 105, 106 and 107,which merge into the raised portions 108, 109 and 110 of the said bars91 and 92. These bars 91 and 92 operate or reciprocate in the openingsof the valve stems 12 and 28 and 13 and 29, and when these bars 91 and92 are recip rocated simultaneously, certainv of the valves 10, 26, 11and 27 are opened, and others are closed, and vice versa.

Movable with the trunnion 51 is a pair of arms 112, the free ends ofwhich are connected at 113 lby the rod 114, which is disposed orarranged between the pear-shaped bulbs, the purpose of which willhereafter appear. This rod 114 also connects to the slide bars 91 and92, and 95 and 96.

Operation: Assuming the chambers 57 and 45 are full of water, havingbeen. filled from the supply tank by the gravitation of the Huid owingto the valve 10 being open, whilethe valves 26 and 78, and 11 and 79 areclosed as shown in the drawings, the tubular trunnion will start to rockowing to the gravitation of the bulb 55, the weight of which isincreased owing to the body or column of water therein. The bulb 55 isshown as having been moved in dotted lines, and as it is in the act ofmoving, the trunnion is rocked, and owing to the bar 114 being mountedin the arms 112, which are also movable with the trunnion, the bars 91and 92 and 95 and 96 are reciprocated synchronously, thereby closing thevalves 10 and 77 and 27 and 80, which will cut olf the supply to thechambers 45 and 55, and allow the water in such chambers to pass intothe boiler and opening the valves 26 and 78 and 11 and 79. Vhile thewater is passing into the boiler, the chambers 56 and 48 are beingfilled, owing to the valve 11 being opened. As soon as the chambers 48and 56 have become filled, and 45 and 57 emptied (as the machine willnot move until the lowered chamber has emptied) the weight orgravitation of the bulbs 58 reverses the movement of the trunnion,thereby reversing the action of said valves, so as to allow the chambers48 and 56 to empty. These operations alternate consecutively as thewater in the boiler is consumed. When the valve 78 is closed, the spaceabove the water line in the boiler is closed to the interior of thechambers 4.5 and 55, and when the valve 79 is closed the inside of thechambers 56 and 48 are closed. to the atmosphere. However, when thechamber 55 is being filled and also the chamber 45, the space above thewater in such chambers is open to the atmosphere owing to the valve 77being opened; this is also true when the chambers 48 and 56 are being`filled, owing to the valve 79 being opened, and in this manner the wateris allowed a freeiiow.

The rocking movement of the trunnion in one direction or the other islimited, owing to one or another of the bulbs 55 and 56 coming incontact with one or another of the buffer bars 116 and 117.

The invention having been set forth, what is claimed as new and usefulis 1. In an automatic boiler feed apparatus, a system of conduits forconnection between a source of water supply and the boiler, two sets ofvalves for controlling the water to the boiler and adapted to be openedand closed alternately, said valves having their stems terminating inforked ends having anti-frictional rollers, a pair of oscillatory bulbshaving supplemental chambers into one or another of which the waterfiows before entering the boiler, slide bars having spaced apart camportions in their lengths and engaging the forked ends of the valvestems and under the anti-frictional rollers, and upon reciprocatorymovements of said slide bars the cam portions act to open and close saidvalve, a trunnion with which said bulbs are connected and rocked therebythrough the gravitation of one or the other, means rockable with thetrunnion and having connections with the slide bars for simultaneouslyoperating the bars, whereby one set of valves may be synchronouslyopened with the closing of the other set and vice versa.

2. In an automatic boiler feed apparatus, a system of conduits forconnection between a source of water supply and the boiler, two sets ofvalves for controlling the water to the boiler and adapted to be openedand closed alternately, a pair of oscillatory bulbs having supplementalchambers into one or another of which the water flows before enteringthe boiler, slide bars having cam portions for openingr or closing saidvalves, and means automatically actuated by the gravitation of one orthe other of said bulbs for simultaneously operating said slide barswhereby one set of valves may be synchronously opened with the closingof the other set and vice versa.

3. In an automatic boiler feed apparatus, a system of conduits forconnection between a source of water supply and the boiler, two sets ofvalves for controlling the water to the boiler and adapted to be openedand closed alternately, a pair of oscillatory bulbs having supplementalchambers into oneor another of which the water flows before entering theboiler, slide bars having cam portions for opening or closing saidvalves, a

trunnion with which said bulbs are connected and rocked thereby throughthe gravitation of one or the other, means rockable with the trunnionand having connections with the slide bars for simultaneously operatingthe bars, whereby one set of valves may be synchronously opened with theclosing of the other set and vice versa.

4;. In an automatic boiler feed apparatus, a system of conduits forconnection between a source of water supply and the boiler, two sets ofvalves for controlling the water to the boiler and adapted to be openedand closed alternately, a pair of oscillatory bulbs having supplementalchambers into kone or another of which the water flows before enteringthe boiler, slide bars having cam portions for opening or closing saidvalves, a trunnion with which said bulbs are connected and rockedthereby through the gravitation of one or the other, means rockable withthe trunnion and having connections with the slide bars forsimultaneously operating the bars, whereby one set of valves may besynchronously opened with the closing of the other set and vice versa, asecond set of chambers each one of which is adapted to fill or empty atthe same time one or the other of the first chambers iill or empty, eachset of valves including additional valves adapted to be opened or closedsynchronously with the other valves of each set for opening the spaceabove the water line in said chambers and the boiler to the atmosphere.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN G. SANDERS.

Witnesses A. J. RENAUD, Louis I-I. Cosrnv.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. 0.

